What steps can be taken to address the header information modification error in PHP?

The header information modification error in PHP occurs when attempting to modify header information after it has already been sent to the browser. To solve this issue, make sure to set header information before any output is sent to the browser. 

<?php
ob_start(); // Start output buffering

// Set header information before any output
header("Content-Type: text/html");

// Your PHP code here

ob_end_flush(); // Flush output buffer
?>

Keywords

header information modification error PHP security

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